One’s own back for the material the liars concocted (8)

I believe the answer is:

reprisal

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'one's own back' is the definition.
I can't tell whether this definition defines the answer.

'the material the liars concocted' is the wordplay.
'the material' becomes 'rep' (rep is a kind of material**).
'concocted' is an anagram indicator.
'liars' anagrammed gives 'risal'.
'rep'+'risal'='REPRISAL'

'for' is the link.

Can you help me to learn more?

(Other definitions for reprisal that I've seen before include "comeback" , "Retaliation for an injury" , "Counterattack" , "Act of revenge" , "revenge attack" .)

I've seen this clue in the Evening Standard.

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